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  <title>sendMessage method - V2TIMMessageManager class - v2_tim_message_manager library - Dart API</title>


  
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<h1><span class="kind-method">sendMessage</span> method 
</h1></div>

    <section class="multi-line-signature">
      

<span class="returntype"><a href="https://api.flutter.dev/flutter/dart-async/Future-class.html">Future</a><span class="signature">&lt;<wbr><span class="type-parameter"><a href="../../models_v2_tim_value_callback/V2TimValueCallback-class.html">V2TimValueCallback</a><span class="signature">&lt;<wbr><span class="type-parameter"><a href="../../models_v2_tim_message/V2TimMessage-class.html">V2TimMessage</a></span>&gt;</span></span>&gt;</span></span>
<span class="name ">sendMessage</span>(<wbr><ol class="parameter-list"><li><span class="parameter" id="sendMessage-param-id">{<span>required</span> <span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/String-class.html">String</a></span> <span class="parameter-name">id</span>, </span></li>
<li><span class="parameter" id="sendMessage-param-receiver"><span>required</span> <span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/String-class.html">String</a></span> <span class="parameter-name">receiver</span>, </span></li>
<li><span class="parameter" id="sendMessage-param-groupID"><span>required</span> <span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/String-class.html">String</a></span> <span class="parameter-name">groupID</span>, </span></li>
<li><span class="parameter" id="sendMessage-param-priority"><span class="type-annotation"><a href="../../enum_message_priority_enum/MessagePriorityEnum.html">MessagePriorityEnum</a>?</span> <span class="parameter-name">priority</span> = <span class="default-value">MessagePriorityEnum.V2TIM_PRIORITY_NORMAL</span>, </span></li>
<li><span class="parameter" id="sendMessage-param-onlineUserOnly"><span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/bool-class.html">bool</a></span> <span class="parameter-name">onlineUserOnly</span> = <span class="default-value">false</span>, </span></li>
<li><span class="parameter" id="sendMessage-param-isExcludedFromUnreadCount"><span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/bool-class.html">bool</a></span> <span class="parameter-name">isExcludedFromUnreadCount</span> = <span class="default-value">false</span>, </span></li>
<li><span class="parameter" id="sendMessage-param-isExcludedFromLastMessage"><span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/bool-class.html">bool</a></span> <span class="parameter-name">isExcludedFromLastMessage</span> = <span class="default-value">false</span>, </span></li>
<li><span class="parameter" id="sendMessage-param-isSupportMessageExtension"><span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/bool-class.html">bool</a>?</span> <span class="parameter-name">isSupportMessageExtension</span> = <span class="default-value">false</span>, </span></li>
<li><span class="parameter" id="sendMessage-param-isExcludedFromContentModeration"><span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/bool-class.html">bool</a>?</span> <span class="parameter-name">isExcludedFromContentModeration</span> = <span class="default-value">false</span>, </span></li>
<li><span class="parameter" id="sendMessage-param-needReadReceipt"><span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/bool-class.html">bool</a></span> <span class="parameter-name">needReadReceipt</span> = <span class="default-value">false</span>, </span></li>
<li><span class="parameter" id="sendMessage-param-offlinePushInfo"><span class="type-annotation"><a href="../../enum_offlinePushInfo/OfflinePushInfo-class.html">OfflinePushInfo</a>?</span> <span class="parameter-name">offlinePushInfo</span>, </span></li>
<li><span class="parameter" id="sendMessage-param-cloudCustomData"><span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/String-class.html">String</a>?</span> <span class="parameter-name">cloudCustomData</span>, </span></li>
<li><span class="parameter" id="sendMessage-param-localCustomData"><span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/String-class.html">String</a>?</span> <span class="parameter-name">localCustomData</span>, </span></li>
<li><span class="parameter" id="sendMessage-param-isDisableCloudMessagePreHook"><span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/bool-class.html">bool</a>?</span> <span class="parameter-name">isDisableCloudMessagePreHook</span> = <span class="default-value">false</span>, </span></li>
<li><span class="parameter" id="sendMessage-param-isDisableCloudMessagePostHook"><span class="type-annotation"><a href="https://api.flutter.dev/flutter/dart-core/bool-class.html">bool</a>?</span> <span class="parameter-name">isDisableCloudMessagePostHook</span> = <span class="default-value">false</span>}</span></li>
</ol>)

      

    </section>
    
<section class="desc markdown">
  <p>发送消息
参数</p>
<pre class="language-dart"><code>id	消息唯一标识
receiver	消息接收者的 userID, 如果是发送 C2C 单聊消息，只需要指定 receiver 即可。
groupID	目标群组 ID，如果是发送群聊消息，只需要指定 groupID 即可。
priority	消息优先级，仅针对群聊消息有效。请把重要消息设置为高优先级（比如红包、礼物消息），高频且不重要的消息设置为低优先级（比如点赞消息）。
onlineUserOnly	是否只有在线用户才能收到，如果设置为 true ，接收方历史消息拉取不到，常被用于实现“对方正在输入”或群组里的非重要提示等弱提示功能，该字段不支持 AVChatRoom。
offlinePushInfo	离线推送时携带的标题和内容。
needReadReceipt 消息是否需要已读回执（只有 Group 消息有效，6.1 及以上版本支持，需要您购买旗舰版套餐）
</code></pre>
</section>


    
<section class="summary source-code" id="source">
  <h2><span>Implementation</span></h2>
  <pre class="language-dart"><code class="language-dart">Future&lt;V2TimValueCallback&lt;V2TimMessage&gt;&gt; sendMessage({
  required String id, &#47;&#47; 自己创建的ID
  required String receiver,
  required String groupID,
  MessagePriorityEnum? priority = MessagePriorityEnum.V2TIM_PRIORITY_NORMAL,
  bool onlineUserOnly = false,
  bool isExcludedFromUnreadCount = false,
  bool isExcludedFromLastMessage = false,
  bool? isSupportMessageExtension = false,
  bool? isExcludedFromContentModeration = false,
  bool needReadReceipt = false,
  OfflinePushInfo? offlinePushInfo,
  String? cloudCustomData, &#47;&#47; 云自定义消息字段，只能在消息发送前添加
  String? localCustomData,
  bool? isDisableCloudMessagePreHook = false,
  bool? isDisableCloudMessagePostHook = false,
}) async {
  if (kIsWeb) {
    return TencentCloudChatSdkPlatform.instance.sendMessage(
      id: id,
      receiver: receiver,
      groupID: groupID,
      priority: priority!.index,
      onlineUserOnly: onlineUserOnly,
      isExcludedFromUnreadCount: isExcludedFromUnreadCount,
      isExcludedFromLastMessage: isExcludedFromLastMessage,
      isSupportMessageExtension: isSupportMessageExtension,
      isExcludedFromContentModeration: isExcludedFromContentModeration,
      offlinePushInfo: offlinePushInfo?.toJson(),
      localCustomData: localCustomData,
      needReadReceipt: needReadReceipt,
      cloudCustomData: cloudCustomData,
      &#47;&#47; isDisableCloudMessagePreHook: isDisableCloudMessagePreHook,
      &#47;&#47; isDisableCloudMessagePostHook: isDisableCloudMessagePostHook,
    );
  }

  return TIMMessageManager.instance.sendMessage(
    id: id,
    receiver: receiver,
    groupID: groupID,
    priority: priority!.index,
    onlineUserOnly: onlineUserOnly,
    isExcludedFromUnreadCount: isExcludedFromUnreadCount,
    isExcludedFromLastMessage: isExcludedFromLastMessage,
    isSupportMessageExtension: isSupportMessageExtension,
    isExcludedFromContentModeration: isExcludedFromContentModeration,
    offlinePushInfo: offlinePushInfo,
    localCustomData: localCustomData,
    needReadReceipt: needReadReceipt,
    cloudCustomData: cloudCustomData,
    isDisableCloudMessagePreHook: isDisableCloudMessagePreHook,
    isDisableCloudMessagePostHook: isDisableCloudMessagePostHook,
  );
}</code></pre>
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    <h5>V2TIMMessageManager class</h5>
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